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QUESTIONS

Fuels and Combustion
A good coking coal should have high __________ content.

Moisture
None of these
Ash
Sulphur & phosphorus

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AC Fundamentals, Circuit and Circuit Theory
Capacitors for power factor correction are rated in

kVA
kVAR
kV
kW

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Fuels and Combustion
If oxygen content in the flue gas rises too high, fuel is being wasted by

Dry gas/stack gas loss
Moisture loss
None of these
Incomplete combustion

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AC Fundamentals, Circuit and Circuit Theory
The power consumed in a circuit element will be least when the phase difference between the current and voltage is

90°
180°
60°
30°

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Fuels and Combustion
Coking time in beehive coke oven is about

2-3 days
One week
Two weeks
12 hours

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